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/* -*- Mode: C++; tab-width: 2; indent-tabs-mode: nil; c-basic-offset: 2 -*- */
/***************************************************************************
* decoder.cc
*
* Mon Mar 6 20:14:30 CET 2006
* Copyright 2006 Bent Bisballe Nyeng
* deva@aasimon.org
****************************************************************************/
/*
* This file is part of MIaV.
*
* MIaV is free software; you can redistribute it and/or modify
* it under the terms of the GNU General Public License as published by
* the Free Software Foundation; either version 2 of the License, or
* (at your option) any later version.
*
* MIaV is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
* GNU General Public License for more details.
*
* You should have received a copy of the GNU General Public License
* along with MIaV; if not, write to the Free Software
* Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA.
*/
#include "decoder.h"
#include "info.h"
#define READ_DV_FROM_FILE
#include "dv.h"
#ifdef READ_DV_FROM_FILE
#include "dvfile.h"
#else/* READ_DV_FROM_FILE*/
#include "dv1394.h"
#endif/* READ_DV_FROM_FILE*/
#include <QEvent>
#include <QApplication>
#include "control.h"
#include "libdv_wrapper.h"
Decoder::Decoder(): semaphore(1), screenshotsemaphore(1)
{
frame = NULL;
running = true;
qApp->installEventFilter(this);
screenshotsemaphore.acquire(); // Lock the screenshot method
}
Decoder::~Decoder()
{
}
void Decoder::run()
{
semaphore.acquire(); // Lock the shutdown process
#ifdef READ_DV_FROM_FILE
dvfile reader;
#else/* READ_DV_FROM_FILE*/
dv1394 reader;
reader.connect();
#endif/* READ_DV_FROM_FILE*/
fprintf(stderr, "init done\n");
while(running) {
char *tmp = (char*)reader.readFrame();
if(MIaV::control.isScreenshot()) {
memcpy(screenshotframe, tmp, DVPACKAGE_SIZE);
screenshotsemaphore.release();
}
if(MIaV::control.isFrozen() == false) {
mutex.lock();
if(frame) free(frame);
frame = tmp;
mutex.unlock();
} else {
free(tmp);
}
}
semaphore.release(); // Unlock the shutdown process
}
char *Decoder::getFrame()
{
char *tmp;
mutex.lock();
tmp = frame;
frame = NULL;
mutex.unlock();
return tmp;
}
bool Decoder::eventFilter(QObject *o, QEvent *e)
{
if (e->type() == QEvent::Close) {
// printf("QUIT from: %p, this: %p, testing: %p\n", o, this, qApp->activeWindow());
if(qApp->activeWindow() == (QWidget*)o) { // Ignore close events from non top level widgets
running = false; // Tell the thread to stop.
semaphore.acquire(); // Wait for the thread to stop.
}
}
// standard event processing
return false;
}
void Decoder::snapshot(char *rgb)
{
LibDVWrapper dv;
dv.setOutputBuffer(rgb, DV::BGR0);
MIaV::control.takeScreenshot();
screenshotsemaphore.acquire(); // Wait for screenshot
dv.decode(screenshotframe);
}
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